<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Document</title>
    <style>
        .box{
            position: fixed;
            right: 30px;
            bottom: 30px;
        }
        .box .item{
            width: 80px;
            height: 40px;
            text-align: center;
            line-height: 40px;
            background-color: brown;
            color: #fff;
            border-radius: 8px;
            cursor: pointer;
        }
        .box .item:hover{
            background-color: #f00;
        }
        .top{
            margin-bottom: 10px;
        }
    </style>
</head>
<body>
    <div class="box">
        <div class="item top">顶部</div>
        <div class="item bottom">反馈</div>
    </div>

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</body>
</html>